Sena Smart HJC 21B Bluetooth Communication System User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Sena Smart HJC 21B Bluetooth Communication System. Please read this manual thoroughly before using the device to ensure proper functionality and safety. This system is designed to integrate seamlessly with 21B compatible HJC helmets.

2. Product Overview and Features

The Sena Smart HJC 21B is a second-generation Bluetooth communication system engineered for HJC helmets. It offers advanced features for enhanced communication and audio experience while riding.

Image: The Sena Smart HJC 21B communication unit, featuring a sleek black design with a blue indicator light on the left side and large, tactile control buttons for volume and function in the center.

Key Features:

• Bluetooth 5.1 Technology: Ensures stable and efficient wireless connectivity.
• 4-Way Intercom: Allows communication with up to four riders simultaneously.
• Extended Talk Time: Provides over 22 hours of continuous talk time.
• HD Speakers: Delivers enhanced audio quality, enriching mid-to low-pitched sounds.
• Advanced Noise Control: Minimizes wind and road noise for clearer communication.
• Universal Intercom: Compatible with non-Sena Bluetooth systems.
• Audio Multitasking: Allows simultaneous intercom conversation and music listening.
• Voice Prompt: Provides audible status updates and guidance.
• Intercom Range: Up to 1600mm (approximately 1 mile) in open terrain.

3. Setup and Installation

The Smart HJC 21B system is designed for easy mounting on compatible HJC helmets, utilizing the helmet's structural interfaces.

Installation Steps:

1. Prepare Your Helmet: Ensure your HJC helmet is a 21B compatible model. Refer to your helmet's manual for specific instructions on preparing it for communication system installation.
2. Mount the Main Unit: Align the Smart HJC 21B main unit with the designated mounting area on the side of your helmet. Secure it firmly according to the helmet's design.
3. Install Speakers: Place the HD speakers into the helmet's ear pockets. Ensure they are positioned directly over your ears for optimal audio quality.
4. Position the Microphone: Attach the microphone to the appropriate location inside the helmet, ensuring it is close to your mouth for clear voice pickup while not obstructing your vision or comfort.
5. Route Cables: Carefully route all cables within the helmet's padding to prevent tangling and ensure comfort.
6. Charge the Device: Before first use, fully charge the Smart HJC 21B using the provided charging cable. The LED indicator will change color to indicate charging status.

Pairing with Devices:

• Smartphone Pairing: Power on the device. Enter pairing mode (refer to the operating instructions for specific button presses). On your smartphone, search for Bluetooth devices and select 'Smart HJC 21B'.
• Intercom Pairing: For intercom communication, follow the specific pairing instructions in the operating section to connect with other Smart HJC 21B units or universal intercom devices.

4. Operating Instructions

This section outlines the basic operations of your Sena Smart HJC 21B system.

Power On/Off:

• Power On: Press and hold the main button for approximately 1 second.
• Power Off: Press and hold the main button for approximately 5 seconds.

Volume Control:

• Increase Volume: Press the '+' button.
• Decrease Volume: Press the '-' button.

Phone Functions:

• Answer Call: Tap the main button.
• End Call: Tap the main button during a call.
• Voice Dial: Press and hold the main button for 3 seconds (if supported by your phone).

Intercom Functions:

• Start/End Intercom: Tap the intercom button (specific button may vary, refer to quick start guide).
• Intercom Pairing: Follow the pairing instructions in the setup section to connect with other units.

Music Playback:

• Play/Pause: Tap the main button.
• Next Track: Press the '+' button for 2 seconds.
• Previous Track: Press the '-' button for 2 seconds.

5. Maintenance

Proper maintenance ensures the longevity and optimal performance of your communication system.

• Cleaning: Use a soft, damp cloth to wipe the exterior of the unit. Avoid using harsh chemicals or abrasive cleaners.
• Storage: Store the device in a cool, dry place when not in use. Avoid extreme temperatures.
• Battery Care: To maintain battery health, charge the device regularly, even if not used for extended periods. Avoid fully discharging the battery frequently.
• Cable Inspection: Periodically check all cables for signs of wear or damage.

6. Troubleshooting

If you encounter issues with your Sena Smart HJC 21B, try the following solutions:

• No Power: Ensure the battery is charged. Connect the device to a power source and check the charging indicator.
• No Audio/Poor Audio Quality: Check speaker connections. Ensure speakers are correctly positioned in the helmet. Adjust volume levels. If using intercom, ensure units are within range.
• Bluetooth Disconnection: Ensure the device is within range of your paired smartphone or other intercom units. Try re-pairing the devices.
• Device Unresponsive: Perform a factory reset if the device becomes unresponsive. Refer to the full user guide on the Sena website for specific reset procedures.
• Intercom Issues: Verify that all participating units are powered on, charged, and correctly paired. Ensure no obstacles are blocking the signal.

7. Specifications

8. Safety Information

Always prioritize safety while riding. Using communication devices can be a distraction. Ensure you are familiar with local laws and regulations regarding the use of communication systems while operating a motorcycle.

• Volume Levels: Avoid listening at excessively high volumes, which can damage your hearing and prevent you from hearing important ambient sounds.
• Distraction: Do not operate the device in a way that distracts you from safe riding. Keep your focus on the road and traffic conditions.
• Helmet Compatibility: This system is designed for specific HJC helmets. Ensure your helmet is compatible to guarantee proper fit and function.
• Helmet Safety Standards: While this communication system integrates with helmets, please note that the helmet itself must meet safety standards such as DOT approval and FMVSS 218 certification for legal on-road motorcycle use in the United States.

9. Warranty and Support

For detailed warranty information and technical support, please refer to the official Sena website or contact Sena customer service directly. Keep your proof of purchase for warranty claims.

Sena Website: www.sena.com